In Hong Kong, Dr. Gao Jing (Lee Sinje) is introduced to the brother of her best girlfriend Chen Xiao Kai (Isabella Leong), the photographer and diver Dave Chen Guo Dong (Guo Xiao Dong). They fall in love for each other and Guo Dong invites Gao Jing to travel to Taiwan to visit an ancient submarine city, where he intends to propose her. During the dive, Guo Dong vanishes and his headless body is found later while Gao Jing cannot recall what happened underwater. She decides to investigate and a bleak mystery is disclosed.
"Sam Hoi Tsam Yan" is a messy, boring and melodramatic never-ending ghost story. The screenplay is awful, with many ridiculous twists where nothing is what seems to be. This movie is so terrible that gives the sensation that will never end. The only good point is the wonderful cinematography. The absurd plot in IMDb is totally wrong. My vote is two.
Title (Brazil): "Mergulho Fatal" ("Fatal Dive")